Tyre battles added another dimension to the racing, which is why I was always slightly uncertain about them. Some teams also got less support from others. Ferrari, for instance, had the develop the Bridgestone tyres by themselves basically at the beginning of this decade, and McLaren switched from Bridgestone to to Michelin because the team felt it was not getting adequate support form the tyre manufacturer.

Ayrton Senna: WDC 1988,
1989, 1990, 1991
McLaren: WCC 1974, 1984, 1985, 1988, 1989, 1990, 1991, 1998,
1999, 2007McLaren: WDC 1974, 1976, 1984, 1985, 1986, 1988, 1989, 1990, 1991, 1998, 1999, 2008